Phytoseiulus Mites are very mobile and eat up to twenty spider mite eggs or up to five adult spider mites in just one day. The predatory female mites lay three to four eggs each day. An adult Phytoseiulus Mite is approx. 0.5 mm, orange-coloured and has a raindrop-shaped body. The eggs are also orange and oval. Once they cannot find more spiders, the Phytoseiulus Mites die.